Peak-recording accelerometer

Details Peak-recording accelerometer Peak-recording accelerometer

1977-06-10

1978-07-18

Gill, James J.

Measuring and testing

Speed, velocity, or acceleration

With means for retaining reading

116114AH, 116129B, G01P 1504

Patent

active

041008073

ABSTRACT:
A low-cost accelerometer having auxiliary pointers which hold its peak readings. It is suitable as a portable instrument for vehicle testing, or may be installed in a structure to hold or retain the maximum readings that occurred during an earthquake or other shock. The accelerometer comprises a cantilever-reed-type mass-spring system with an indicating pointer disposed so as to push a pair of light-weight balanced "tell-tale" or holding pointers which are mounted on light frictional pivots and record or hold the peak deflection of the main pointer. The working parts are mounted in a flat case filled with a damping fluid. Reset knobs for the holding pointers are located on the outside of the case. The frictional torque of their pivots is adjustable from outside. A typical range for the instrument is .+-. 2 g.

REFERENCES:
patent: 797500 (1905-08-01), Cowey
patent: 2394974 (1946-02-01), Bevins
patent: 2671202 (1954-03-01), Petroff
patent: 3318157 (1967-05-01), Browning et al.

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